Razor blade holder



May 13, 1952 J. w. CLARK 2,596,372

RAZOR BLADE HOLDER Filed Sept. 20, 1946 Inventor JOHN W. CLARK Arorneys Patented May 13, 1952 UNITED STATES PATENT OFFICE RAZOR. BLADE HOLDER clin W. Clark, Washington, D. C.

Application September 20, 1946, Serial No. 698,234

(Cl. SIL-70) 1 Claim. 1

This invention has to do with safety razors using blades of the wafer type.

The invention relates to a novel blade holding razor part, here shown as a razor cap, on which the blade engaging portions are formed. The cap construction here disclosed is adapted to novel form of blade disclosed, and has novel features which maire the assembling of the blade and the razor part a simple and expeditious matter, the blade, when placed on the cap, sliding over curved or crowned surfaces on the razor part with which it is to be assembled in such fashion as to drop easily and automatically to its final position with a minimum of effort on the part of the user.

In the drawings herewith is illustrated a blade holder embodying my invention, and in said drawings:

Figure 1 is a plan view of Ia blade arranged to be associated with the improved holder.

Figure 2 is a view similar to Figure l showing the blade holding and centering rib in section; this view being substantially on the line 22, Figure 3.

Figure 3 is a View of a flexed blade with its cap and guard taken substantially on the line 3 3 of Figure 2.

Figure 4 is a View of a flexed blade with its cap and guard taken substantially on the line ll4 of Figure 2.

Figure 5 is a View in plan of the cap.

Figure 6 is a sectional view of the cap on substantially the line 6--6 of Figure 5.

Figure 7 is an end View of the cap.

Figure 8 is a sectional View on substantially the line 8 8, Figure 6.

Figure 9 is a sectional view on substantially the line 9-9 of Figure 6.

In the description which follows the drawing will be referred to by numbers, and the same numbers will designate the same parts in the several views.

The blade I arranged to be carried by the holder may be provided with an elongated centrally disposed slot or opening II (Fig. 1) which terminates at its ends in transversely curved slots or lateral openings I2 equally distant from the side edges of the blade and struck out from the center as the lcurved ends of the blade so as to be substantially parallel therewith. Blade areas I3 are disposed on each side of the slots I2 and blade areas I 4 are located at the ends of the slots I2. I

The guard I and cap I 6 which form the blade holding assemblage, are designed for the blade 2 I0 and are fashioned in novel form as to ensure easy and accurate seating of the blade, which, when brought to its final position can be clamped and held in perfect relation to the razor parts and for shaving action.

The blade engaging rib I5 is here shown as formed on the cap I6. It is conceivable that it might be placed on the guard I6', as blade engaging members have been formed on either the cap or guard, and infrequently on bot-h. The prevailing and better practice is to place such members on the cap, as here shown. It is to be understood, however, that no limitation as to forming blade engaging members on a particular razor part is to be imposed because of this illustrative disclosure. As stated, the longitudinal rib section I5 is closely tted to the longitudinal portion of the slot II in the blade so that side play of the blade is prevented. Rib I5 has a longitudinally curved crown I'I which extends throughout its entire length, this crown II sloping in opposite directions from the high point or maximum height I8 at the usual threaded guard attaching post I9. Rib I5 is also curved laterally, as shown in Figs. 4, 6 and 8, so that a rib having a compound curved crown is provided. With the rib I5, formed with the curved crown as described, a blade, when dropped over the post I 9, will rest on the peak of the crowned rib, and, by reason of the longitudinal and lateral curves or inolines of the crown, can be moved readily to its nal position for full engagement with the rib I5. The blade tends automatically to fall in its final position as it contacts the rib and is straightened out, this being due to the curvatures of the rib crown.

The laterally extended cut outs I2 at the ends of the longitudinal opening II in blade I0, have been described, and to take care of these out outs I2 and ensure complete blade engagement, there is provided at each end of the longitudinal rib section I5 an integral laterally extended curved arm or section 20, so shaped as to completely ll the laterally extended end cut outs |21, thereby further fixing the blade against side play and, additionally against end play. These curved arms or end sections 20 of the blade holding rib are laterally extended to ensure secure and accurate support for the blade throughout the entire area of its bell-bar shaped opening. End sections 20 have crowns 2| curved both longitudinally and laterally, so that, when the blade is being positioned and strikes the curved crowns of the end sections, it will move easily and readily to its final position. Preferably, the tops of the crowned end sections 20 will be slightly below the peak or maximunrheight of the crown of the longitudinal section of rib I so that the blade will'rst contact the high point of the rib and then, as it swings and drops, will ride over the curved crowns of end sections 20. This construction permits the blade to move without anycheck Y or interference to its final position when it is dropped on the razor part, and a minimum of effort in centering and positioning the blade is secured. At their ends the sections 20 will be inclined downwardly, the tops of the inclines 2l' being slightly curved, as shown in Figures 5 and 6 so as to permit an easy andsure dropping of the blade l0 to its final position. Y

The projections and recesses in the razor parts are so contoured as to fit closely together and to closely embrace the blade, in order to eliminate any interspaces. This gives a liquid sealed relation of the parts and prevents collection of water b etween them. This feature is of very considerable value from a practical standpoint. Aprecision made blade holder with the parts closely fitted, as shown, provides a construction in which the objectionable retention of liquid is eliminated and need of separating the parts and the blade for removing liquid deposits is done away with.

The bladepatterned as herein disclosed, ensures, when flexed, a uniform bending of the blade throughout its entire area, eliminating to a marked degree diverse strains and stresses in the blade such as result with blades having complicated cut outs, and gives evenly stressed cutting edges. The blade-receiving razor part shown and described, lends itself to the easy and ready seating of the blade in its final position, without the necessity of particular and careful manipulation of the blade to bring the parts together, and, when finally assembled, the blade is securely fixed in proper relation to the razor parts.

The disclosure here made is of particular, operative, and satisfactory construction. It is obvious that mechanical changes Without departing from the inventive concept and principle, may

4 be made. Allgsuch changes which fall within the range of the appended claim are to be regarded as within the purview of the invention.

I claim:

A safety razor having a blade holder including a guard member, a co-acting cap member, said guard member having a centrally disposed recess, said cap member having an integral longitudinally disposed central rib arranged to fit into said recess when the parts are assembled, said longitudinal rib having straight sides and terminating in transverse arms extending laterally from the end thereof, said transverse arms having curved sides concentric with the center of said longitudinal rib, saidrib and arms having crowned tops curved longitudinally and laterally to facilitate insertion of the blade in proper position on the holder between said members, the crown of the longitudinal rib projecting outwardly a greater distance than the crowns of the lateral arms so that the blade initially engages the longitudinal rib and then the lateral arms in order to be accurately and precisely positioned between the members when the parts are assembled, and means for clamping the blade between said members to insure a liquid excluding contact.

JOHN W. CLARK.

REFERENCES CITED The following references are of record in the le of this patent:

' UNITED STATES PATENTS Number Name Date 967,500V Clark Aug. 16, 1910 1,919,388 Muros July 25, 1933 2,004,086 Testi June 4, 1935 2,037,180 Segal Apr. 14, 1936 2,050,395 Testi Aug. 11, 1936 2,125,501 Holtzman Aug. 2, 1938 2,191,324 Segal Feb. 20, 1940 2,273,261 Gump Feb. 17, 1942 2,347,595 De Swart Apr. 25, 1944 2,361,410 Muros Oct. 31, 1944 

